Method
Audio phase coherence
Stereo phase coherence per track
What we measure and how
Stereo phase coherence quantifies how well the two channels combine when summed to mono — pin-sharp mono-compatible content registers near +1, fully decorrelated stereo near 0, and a polarity-inverted channel near -1 (audible as a hollow, phasey collapse in mono playback). Computed per audio track as the time-averaged Pearson correlation between L and R after RMS normalisation, evaluated at the native audio frame rate. Reported as a single coefficient per track.
Spec fields consulted
These Universal Media Delivery Profile paths resolve this check's thresholds against your spec snapshot at the moment the job was submitted.
- · assets.audio.quality.min_phase_correlation
The full UMDP schema: /umdp.
Related methods
Method identifier: audio_phase_coherence